Diapers

Caroline
I am not due until August, BUT my husband and I want to start buying diapers every time we go to the store so that we have a good collection by due date time.  I am wanting suggestions on best brand/best value. I have read that sometimes the BIGGEST box isn't always the best deal per diaper. It is so overwhelming walking down the diaper isle and not have any clue what really makes them different. Lol I know some babies are sensitive and such so we will be keeping all receipts, just wanting to get some feedback from you ladies. 
We are also considering Honest company online. Any feedback from moms would have used or are currently using those? 
Any lastly, any clue as to how many of each size we should start out buying? Don't want to over do it on one size. 
Thanks! 😘